Question
What are the CD4 cells
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Answer
Mediated meaning
Answered by
GPT 3.5
CD4 cells, also known as T-helper cells or CD4+ T cells, are a type of white blood cell that play a critical role in immune response. They are specifically referred to as "CD4" cells due to the presence of a protein called CD4 on their cell surface.
CD4 cells are a subset of T cells and are a part of the adaptive immune system. They primarily function to coordinate and regulate the immune response by recognizing and interacting with antigens presented by other cells. CD4 cells have receptors that bind to antigens, which can be derived from pathogens or foreign substances.
By activating and communicating with other immune cells, such as B cells and cytotoxic T cells, CD4 cells help initiate and regulate both the humoral and cell-mediated immune responses. Additionally, CD4 cells also release chemical messengers called cytokines, which further modulate the immune response.
CD4 cells are particularly targeted by the human immunodeficiency virus (HIV). HIV infects and destroys CD4 cells, leading to a weakened immune system and increased susceptibility to various infections and diseases. Monitoring the count of CD4 cells is crucial in determining the progression and management of HIV/AIDS.
CD4 cells are a subset of T cells and are a part of the adaptive immune system. They primarily function to coordinate and regulate the immune response by recognizing and interacting with antigens presented by other cells. CD4 cells have receptors that bind to antigens, which can be derived from pathogens or foreign substances.
By activating and communicating with other immune cells, such as B cells and cytotoxic T cells, CD4 cells help initiate and regulate both the humoral and cell-mediated immune responses. Additionally, CD4 cells also release chemical messengers called cytokines, which further modulate the immune response.
CD4 cells are particularly targeted by the human immunodeficiency virus (HIV). HIV infects and destroys CD4 cells, leading to a weakened immune system and increased susceptibility to various infections and diseases. Monitoring the count of CD4 cells is crucial in determining the progression and management of HIV/AIDS.
Answered by
GPT 3.5
In the context of immune response, "mediated" refers to the involvement or influence of specific cells or molecules in coordinating and carrying out a particular immune process or action. Immune responses can be mediated by various components of the immune system, such as cells (T cells, B cells, macrophages, etc.) or molecules (antibodies, cytokines, etc.).
For example, cell-mediated immunity involves the direct involvement of immune cells, particularly T cells, in fighting off infections or eliminating abnormal cells. T cells recognize and interact with specific antigens to mount an immune response. This immune response may include the activation of cytotoxic T cells, which directly kill infected cells, or the release of cytokines that help regulate the immune response.
On the other hand, humoral immunity is mediated by antibodies produced by B cells. Antibodies, also referred to as immunoglobulins, can bind to antigens and neutralize pathogens or mark them for destruction by other immune cells.
In summary, "mediated" in the context of immune response signifies the involvement of specific cells or molecules in orchestrating and carrying out immune reactions to protect the body from pathogens and foreign substances.
For example, cell-mediated immunity involves the direct involvement of immune cells, particularly T cells, in fighting off infections or eliminating abnormal cells. T cells recognize and interact with specific antigens to mount an immune response. This immune response may include the activation of cytotoxic T cells, which directly kill infected cells, or the release of cytokines that help regulate the immune response.
On the other hand, humoral immunity is mediated by antibodies produced by B cells. Antibodies, also referred to as immunoglobulins, can bind to antigens and neutralize pathogens or mark them for destruction by other immune cells.
In summary, "mediated" in the context of immune response signifies the involvement of specific cells or molecules in orchestrating and carrying out immune reactions to protect the body from pathogens and foreign substances.
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